This specimen was cast from a real human fetal skull. Estimated to be 40 1/2 weeks old, this skull exhibits characteristics of prenatal development. This specimen is an excellent aide when studying human fetal osteological development.nnSpecifications:nn1:1 scalenPolyurethane resin castn2-part skull (separate cranium and jaw)nnSkull Length 12 cm (4.7 in.)nnSkull Width 8.9 cm (3.5 in.)nnSkull Height 8.3 cm (3.2 in.)nnProduct of Bone Clones